chore: set protocol for npm to https

[ph-fritsche]

Why:

npm notice Beginning October 4, 2021, all connections to the npm registry - including for package installation - must use TLS 1.2 or higher. You are currently using plaintext http to connect.

Checklist:

• Ready to be merged

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[codecov]

Codecov Report

Merging #975 (0b04b92) into main (7f53b56) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #975   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          140       140           
  Branches        26        26           
=========================================
  Hits           140       140           

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[github-actions]

🎉 This PR is included in version 12.1.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 13.0.0-alpha.7 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀